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IDEA also uses a bit key and operates on 64 bits of data. Also, patents filed by Kudelski indicate a 64 bit ECM key and not bit. Many in the testing community have suggested that bit IDEA is being used. Yet, they have not offered any proof of this.

They are welcome to substantiate their claims here. Why would they change this encryption algorithm when it was never compromised? It would be like a shopowner installing a bigger lock on his shop door after burglars broke in through the window Also, they had the DES crypto-processor in silicon already and my hunch is that they simply built around the Nagra 1 card.

And at this time, nobody can get the DES keys! If there 16 rounds of decryption, then it is DES. If there are 48 rounds, then 3-DES. These patterns will be clear during the test. IDEA takes only half the time to execute on average. We really can't go any further until we know the block cipher with certainty. Keep reading What are these extra control words and why are they there? The Mpeg-2 stream only needs 2 control words to be descrambled. Perhaps the extra "control words" are for future use on the Mpeg-4 stream.

If there are any experts on the Mpeg-4 digital format, please enlighten us on the use of control words in Mpeg Although we are not entirely certain that these extra "control words" are really control words, we shall call them by that name.

We are certain that 2 of the 6 are indeed control words, or otherwise, the current MPEG-2 stream could not be descrambled. The result will be a black screen. Furthermore, one can easily clone receivers and still use a valid Nagra 2 card. IDEA has been proposed as the new encryption schema here too, but no proof has been given. Nobody has publicly disassembled the firmware and reverse engineered the algorithm.

Again, thos who claim IDEA is being used are welcome to offer proof. A card swap does not mean any chips inside the IRD are changing If anyone knows where the S-Box constants are stored, please tell us and that would settle this matter.

There has been some talk about a "secondary key" in some model IRDs. This supposedly prevents receiver cloning as both the boxkey and various "secondary key" have to be known.

Some have argued that this supports the hypothesis of IDEA being used with a 16 byte key. However, any secondary or tertiary keys may also be used in 3-DES or some variant.

The model IRDs I have examined do not seem to have any "extra" keys. The nagra2 stream disappeared as soon as a huge galaxis receiverss stock with magic firmware inside was sold. Click to expand MattJ Regular Member. Somebody having the same "experience"??? Joined Aug 30, Messages 6 Reaction score 0 Points 0 My Satellite Setup pansat coolsat twin legacy dish lmbs through 2 4x1 diseq My Location daytona beach fl usa. I think you may end up with spam if you do JTA Regular Member.

MattJ said:. What is Seca3? I thought it was Seca2 which was still secure?? NismoR Follow, Follow. Unless this is all a big rumour?? Compared to Cyfra Poland where the only audio you get is Polish And Spain is quite big, so there's a large market for these hacks. After all, for every sky's-the-limit customer, there are s if not 1's willing to likewise indulge their hifi passions but who are constrained by less opulent means. Spinning that theme downward and seeing how the MSA would be discontinued Why not repackage the MSA as a poor man's Nagra and sell it direct?

Sans trademark case, modulometer and designer heat sink, wouldn't a plain Jane watter with bona fide Swiss-made Nagra sonics enjoy a very appreciative audience? Consider this our informal petition. It came with amazing measurements, an extremely low noise floor, negligible distortion and so forth.

Really the only request we ever received about it from customers was, could we make it more powerful. Though it might seem a trivial matter, in Nagra terms it isn't. When the HD DAC created a new chassis paradigm for us with its increased depth, we dared push that envelope further to now grow vertically.

Whilst the Classic Amp remains reasonably compact, it provides far more interior space to accommodate larger parts and scale up thermal dissipation.

This allowed our engineers to go after a much larger power supply. As a consequence, the amp behaves far more powerful than its specs would suggest. The larger casing also supports more and larger capacitors and higher voltage rails. Applying advanced computer simulation software, we also optimized heat dissipation.